Bio-remediation approaches for alleviation of cadmium contamination in natural resources

Kumar, Amit; Subrahmanyam, Gangavarapu; Mondal, Raju; Pinto, Marina M. S. Cabral; Shabnam, Aftab A.; Jigyasu, Dharmendra Kumar; Malyan, Sandeep K.; Fagodiya, Ram Kishor; Khan, Shumaila; Yu, Zhiguo

doi:10.1016/j.chemosphere.2020.128855

Cited by 141 publications

(51 citation statements)

References 203 publications

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“…Metals are an inextricable part of the earth's crust, but their levels in water and porous media such as soil and sediment are a major source of worry for conservationists due to their dangerous, non-biodegradable, and long-lasting properties (Chen et al 2017;Giri and Singh 2019;Shah et al 2019;Kumar et al 2020a,b). Heavy metals (HMs) are group of metals and metalloids characterized by specific gravities greater than 5 and atomic densities larger than 4 g/ cm3 (Barzegar et al 2015;Ganiyu et al 2017;Enuneku et al 2018;Kumar et al 2020c). HMs can be found in water from geological or manmade activities (Nawab et al 2017;Paul et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Assessment of heavy metals contamination and associated risks in shallow groundwater sources from three different residential areas within Ibadan metropolis, southwest Nigeria

2021

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This study has been conducted to appraise the concentrations of selected heavy metals and total dissolved solids (TDSs) in the drinking water from shallow wells in parts of Ibadan metropolis, southwest Nigeria. Fifteen (15) water samples were collected from three representative residential locations [traditional core area (TCA), peri-urban area (PUA), and urban area (UA)] for geochemical analysis. Heavy metals and TDS were analyzed with the aid of atomic absorption spectrophotometer and calibrated meter, respectively. The mean concentration (mg/L) of Zn, Pb Mn, Fe, and Cd has been 3.930, 0.658, 0.0304, 1.698, and 0.501, respectively, and as a consequence, the order of abundance of studied metals was Zn > Fe > Pb > Cd > Mn. Concentrations of Zn, Fe, Pb, and Cd were higher than recommended standards in 60%, 86.7%, 100%, and 100% of groundwater samples, respectively. However, at all points tested, the mean concentrations of Mn and TDS in water samples lie within the safe limits set by World Health Organization. The evaluation of geoaccumulation index (Igeo), enrichment factor (EF), and contamination factor suggests that representative water samples were low-to-moderate contamination. The potential ecological risk index advocates low-to-moderate ecological risk in TCA and PUA, while it demonstrated exclusive “moderate” risk in UA. Further, the range of pollution load index (PLI) (0.55–1.32) in both TCA and PUA shows nil-to-moderate pollution status, while PLI values > 1 in UA indicate moderate contaminated state. The degree of contamination in groundwater showed the following trends: UA > TCA > PUA in the study area. Moreover, the results of EF and quantification of contamination of analyzed metals in water samples indicate geogenic and anthropogenic inputs. The contribution of studied metals to the incidence of non-cancer risk via oral intake within the residential sites follows the order: cadmium > lead > zinc > iron > manganese. The hazard index as a result of ingested heavy metals for the three population classes surpasses the acceptable range in the order of infant < child < adult. Cadmium and lead made considerable impact to the estimation of cancer risk in the study area for the three human population categories. Factor analysis extracted only one component that explained 94.64% of the entire variance, while cluster analysis identified three distinct groups based on similar water quality characteristics. Based on the findings of the study, awareness programs toward protecting the shallow groundwater sources should be launched, encouraged, and sustained. Moreover, the study suggests better hygienic practices and pre-treatment of contaminated water before consumption.

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Section: Introductionmentioning

confidence: 99%

Assessment of heavy metals contamination and associated risks in shallow groundwater sources from three different residential areas within Ibadan metropolis, southwest Nigeria

2021

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“…are the natural sources of Cd input in paddy soils [3]. Relative to other heavy metals, Cd is readily mobile and soluble in soil [9] and is thus quickly taken up through the root systems [10]. After root uptake, Cd is conglomerated in different edible parts of the plant and does harm to living cells at very low concentrations [5,11,12].…”

Section: Introductionmentioning

confidence: 99%

Influence of Iron Plaque on Accumulation and Translocation of Cadmium by Rice Seedlings

et al. 2021

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This study investigated the impact of soil type and rice cultivars on variations in the iron plaque formation and cadmium (Cd) accumulation by different portions of rice seedlings under the influence of Fe amendment. The experiments were performed in pots under glasshouse conditions using two typical paddy soils. Rice seedlings were exposed to three concentrations of Cd (0, 1 and 3 mg kg−1 soil) and Fe (0, 1.0 and 2.0 g kg−1 soil). The results revealed that shoot biomass decreased by 12.2–23.2% in Quest and 12.8–30.8% in Langi in the Cd1.0 and Cd3.0 treatments, while shoot biomass increased by 11.2–19.5% in Quest and 26–43.3% in Langi in Fe1.0 and Fe2.0 as compared to the Fe control. The Cd concentration in the roots and shoots of rice seedlings were in the order of Langi cultivar > Quest cultivar, but the Fe concentration in rice tissues showed the reverse order. Fe plaque formations were promoted by Fe application, which was 7.8 and 10.4 times higher at 1 and 2 g kg−1 Fe applications compared to the control Fe treatment. The Quest cultivar exhibited 13% higher iron plaque formation capacity compared to the Langi cultivar in both soil types. These results indicate that enhanced iron plaque formation on the root surface was crucial to reduce the Cd concentration in rice plants, which could be an effective strategy to regulate grain Cd accumulation in rice plants.

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“…So, the basic properties of those two phytoextraction strategies of metals from soils are illustrated as followed in Table 2. In addition, the analysis of the Table 2 content and based on some of other's investigations give birth to a fundamental conclusion summarized on the fact that the natural metal-accumulating capacity seem to be the most one because of the negative repercussion of the chemically enhanced phytoextraction method [26][27][28].…”

Section: Metal Extraction Processmentioning

confidence: 99%

Chelate-assisted phytoextraction using Brassicaceae plants

Saibi¹,

Brini²

2020

Open J Environ Biol

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In these last decades, excessive metal concentration pose serious contamination in soils. Therefore, it is urgent to develop and adopt a new strategy and technology to remove soil contaminants. Here, the phytoextraction was considered as a recently developed approach to clean up metal-polluted soils in that the plants are used to translocate the toxic metals from the contaminated soils. Therefore, this mini-review provides a perfection of recent knowledge related to the heavy metal phytoextraction from soils and their accumulation in plants. It has been reported that EDTA enhances the availability of heavy metal to plants and thus increases the accumulation in their shoots. In addition, fundamental and basic advancement has been made on the molecular aspects and the physiological regarding tolerance and metals phytoaccumulation in plants. A multidisciplinary strategy is warranted to make phytoextraction a plausible trade technology to remediate metal-polluted soils. Hence, the purpose is to integrate soil-related and biological progress to suggest research needs and future direction.

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Bio-remediation approaches for alleviation of cadmium contamination in natural resources

Cited by 141 publications

References 203 publications

Assessment of heavy metals contamination and associated risks in shallow groundwater sources from three different residential areas within Ibadan metropolis, southwest Nigeria

Assessment of heavy metals contamination and associated risks in shallow groundwater sources from three different residential areas within Ibadan metropolis, southwest Nigeria

Influence of Iron Plaque on Accumulation and Translocation of Cadmium by Rice Seedlings

Chelate-assisted phytoextraction using Brassicaceae plants

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